package com.example.demo4.dao;

import com.example.demo4.pojo.Student;

import java.util.List;
import java.util.Map;

public interface StudentDao {

    public int add(Student student);

    public int update(Student student);

    public int deleteBysno(String sno);

    public List<Map<String, Object>> queryStudentsListMap();

    public Student queryStudentBySno(String sno);
}
